All Questions ⁺⁰237686 Questions

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1211

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Help!

Yesterday morning at 8 a.m. the temperature was -14˚F. At noon it was 10 degrees warmer. The temperature increase between noon and and 4 p.m. was twice the temperature increase between 8 a.m. and noon. What was the temperature at 4 p.m?

Dimitristhym ●

SGPChau Oct 25, 2018

Oct 24, 2018

0

544

1

What equal -5n =-15

What equal -5n =-15

Guest Oct 24, 2018

0

734

1

Isaac checks out 5 boxes of 8 books from the library. After reading all of them, he realizes that he beat his&

Isaac checks out 5 boxes of 8 books from the library. After reading all of them, he realizes that he beat his reading goal by 3 books. What was Isaac's reading goal?
<read more ..

Guest Oct 24, 2018

0

524

1

Dice Challenge!

8 fair 6-sided dice are rolled 8 times. Their sum totals were 28, 29, 30, 31, 32, 33, 34 and 35, but not necessarily in that order. What is the overall probability of this occurring? This is a very tough one to crack! Any help would be great. Thank you. read more ..

Guest Oct 24, 2018

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752

3

Geometry question

Triangle has a right angle at . Legs and are extended past point to points and , respectively, such that . Prove that

I understand that I read more ..

Guest Oct 24, 2018

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703

7

Really hard Competition math problem

Plz help me I am stuck in this stupid competition math class nobody wants to be in and I must solve problems that use theorems we never learned and if we don't she yells at us and says we read more ..

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Guest Oct 24, 2018

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992

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+283

Need help

How many different non-congruent isosceles triangles can be formed by connecting three of the dots in a 4x4 square array of dots like the one shown below?
* * * *
* * * * read more ..

ANotSmartPerson Oct 24, 2018

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920

3

+283

help please

Find the value of n that satisfies n-2(n+1)!+6n!=3(n+1), where n!=n*(n-1)*(n-2)***2*1 .

ANotSmartPerson Oct 24, 2018

-1

712

1

+4116

Help

Help

Suppose a normal distribution has a mean of 20 and a standard deviation of 4.
What is the z-score value 0.52. Its standard deviations is less than the mean?
-0.13
0.13

NotSoSmart Oct 24, 2018

-1

639

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+4116

Help 10

NotSoSmart Oct 24, 2018

-1

796

2

+4116

Help 9

NotSoSmart Oct 24, 2018

0

1023

2

+4

Permutations, combinations, and the multiplication principle for counting

A catering service offers 12 appetizers, 9 main courses, and 6 desserts. A customer is to select 5 appetizers, 3 main courses, and 4 desserts for a banquet. In how many ways can this be done?

omarsjan Oct 24, 2018

+1

941

2

Solve. Show each step. also check thx :D

creepercraft97T3 ●●

Guest Oct 24, 2018

-1

857

0

+65

Gamma Functions (a.k.a factorials)

I have recently been pondering about the results of non-integer values of the gamma function. For those who don't know, the gamma function is basically defined as an extension to factorials. I have been trying to use some equations that would work on desmos read more ..

creepercraft97T3 Oct 24, 2018

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876

2

+27

Pre-calc

Convert the function into intercept form. Show your work
y=x^2+5x+36

mathretarted Oct 24, 2018

+2

716

1

+693

what is the slope

what is the slope
http://prntscr.com/la28f2

and which is the rise and run read more ..

critical Oct 24, 2018

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656

0

+4116

Help 8

Help 8

Not sure if it it's B or D

NotSoSmart Oct 24, 2018

0

856

3

+1995

Solve for x.

Solve for x.
√x+5= √x+ 1

no solution read more ..

jjennylove Oct 24, 2018

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591

1

Help

What is the inverse of f(x)=(x+6)^2 for x≥–6 where function g is the inverse of function f?

g(x)=[√x]−6, x≥0 read more ..

Guest Oct 24, 2018

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553

1

Need Some Help

This set of points is on the graph of a function.
{(−3, 9), (−1, 1), (0, 0), (2, 4)}
Which points are on the graph of the inverse?
Select each correct answer. read more ..

Guest Oct 24, 2018

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747

1

Help Please

Which functions are invertible?
Select each correct answer.

Guest Oct 24, 2018

0

2142

4

+1995

Simplify.

first question :
Simplify.
2+x/8x / 3+x/x
read more ..

jjennylove Oct 24, 2018

-1

750

2

+4116

Help 7

NotSoSmart Oct 24, 2018

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